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Method for palm touch identification in multi-touch digitizing systems

a multi-touch digitizer and palm technology, applied in the field of multi-touch digitizer systems, can solve problems such as limiting their mobility

Inactive Publication Date: 2009-04-16
MICROSOFT TECH LICENSING LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0046]For example, hardware for performing selected tasks according to embodiments of the invention could be implemented as a chip or a circuit. As software, selected tasks according to embodiments of the invention could be implemented as a plurality of software instructions being executed by a computer using any suitable operating system. In an exemplary embodiment of the invention, one or more tasks according to exemplary embodiments of method and / or system as described herein are performed by a data processor, such as a computing platform for executing a plurality of instructions. Optionally, the data processor includes a volatile memory for storing instructions and / or data and / or a non-volatile storage, for example, a magnetic hard-disk and / or removable media, for storing instructions and / or data Optionally, a network connection is provided as well. A display and / or a user input device such as a keyboard or mouse are optionally provided as well.

Problems solved by technology

These new devices are usually not connected to standard keyboards, mice or like input devices, which are deemed to limit their mobility.

Method used

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Embodiment Construction

[0055]The present invention relates to multi-touch digitizer systems and more particularly to fingertip detection in multi-touch digitizer systems.

[0056]An aspect of some embodiments of the present invention is the provision of methods for differentiating between input from fingertip touch and input resulting from palm touch on a multi-touch digitizer system. In some exemplary embodiments, input resulting from palm touch also includes artifact regions that are not actual touch region but that typically surround palm touch or other large area touch regions According to some embodiments of the present invention, digitizer system includes a digitizer sensor with parallel line crossed grids where positions are defined as junctions. However, it is noted that the invention is applicable to any digitizing system that detects multiple positions, e.g., capacitive or contact touch pads. The present inventors have found that a plurality of distinct touch regions may be detected on some digitiz...

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Abstract

A method for classifying input to a multi-touch sensitive digitizer that is obtained from a body part as inputs invalid for user interaction and inputs valid for user interaction comprises: identifying a plurality of discrete regions of input to a digitizer sensor; determining spatial relation between at least two of the regions; and classifying one of the at least two regions as either valid input region or invalid input region based on the spatial relation determined between the at least two regions.

Description

RELATED APPLICATION[0001]The present application claims the benefit under section 35 U.S.C. §119(e) of U.S. Provisional Application No. 60 / 960,714 filed on Oct. 11, 2007 which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates to multi-touch digitizer systems, and more particularly to fingertip input detection in multi-touch digitizer systems.BACKGROUND OF THE INVENTION[0003]Touch technologies are commonly used as input devices for a variety of products. The usage of touch devices of various kinds is growing sharply due to the emergence of new mobile devices such as Personal Digital Assistants (PDA), tablet PCs and wireless Flat Panel Display (FPD) screen displays. These new devices are usually not connected to standard keyboards, mice or like input devices, which are deemed to limit their mobility. Instead there is a tendency to use touch sensitive digitizers of one kind or another. A stylus and / or fingertip may be used as ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06K11/06
CPCG06F3/044G06K9/00G06F2203/04104G06F3/04186G06F3/0445G06F3/0446
Inventor ZACHUT, RAFIKAPLAN, AMIRWOHLSTADTER, GIL
Owner MICROSOFT TECH LICENSING LLC
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